Analysis

  • max time kernel
    87s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    18-04-2022 12:40

General

  • Target

    424837df31cc4e1161d0329c7ec5995b76747662ff8fc633d99ff7f95f3ca9fa.exe

  • Size

    878KB

  • MD5

    0e26ef9a028fbc3deb0a67809b5ce0cb

  • SHA1

    2ea7ed61e3327d8255d4b0bafa6b87873ee5dbf4

  • SHA256

    424837df31cc4e1161d0329c7ec5995b76747662ff8fc633d99ff7f95f3ca9fa

  • SHA512

    5f554de99249785334a02f29b8650979d7263a2367de9858c21eaf61caaf211c44872beb01573371f6b34c5673d0a56962a9a1cef03807c9148facd63a723ff9

Malware Config

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

  • MassLogger Main Payload 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 42 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\424837df31cc4e1161d0329c7ec5995b76747662ff8fc633d99ff7f95f3ca9fa.exe
    "C:\Users\Admin\AppData\Local\Temp\424837df31cc4e1161d0329c7ec5995b76747662ff8fc633d99ff7f95f3ca9fa.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4184
    • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
      "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:4676
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe'
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:740

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\5fe04141-d3b5-4927-8ee5-5a463e534407\njn.dll

    Filesize

    94KB

    MD5

    14ff402962ad21b78ae0b4c43cd1f194

    SHA1

    f8a510eb26666e875a5bdd1cadad40602763ad72

    SHA256

    fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b

    SHA512

    daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b

  • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe

    Filesize

    42KB

    MD5

    9827ff3cdf4b83f9c86354606736ca9c

    SHA1

    e73d73f42bb2a310f03eb1bcbb22be2b8eb7c723

    SHA256

    c1cf3dc8fa1c7fc00f88e07ad539979b3706ca8d69223cffd1d58bc8f521f63a

    SHA512

    8261828d55f3b5134c0aeb98311c04e20c5395d4347251746f3be0fb854f36cc7e118713cd00c9867537e6e47d5e71f2b2384fc00c67f0ae1b285b8310321579

  • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe

    Filesize

    42KB

    MD5

    9827ff3cdf4b83f9c86354606736ca9c

    SHA1

    e73d73f42bb2a310f03eb1bcbb22be2b8eb7c723

    SHA256

    c1cf3dc8fa1c7fc00f88e07ad539979b3706ca8d69223cffd1d58bc8f521f63a

    SHA512

    8261828d55f3b5134c0aeb98311c04e20c5395d4347251746f3be0fb854f36cc7e118713cd00c9867537e6e47d5e71f2b2384fc00c67f0ae1b285b8310321579

  • C:\Users\Admin\AppData\Local\Temp\b35bc50e-fc56-4239-a7d0-bb79118b31c9\AgileDotNetRT.dll

    Filesize

    94KB

    MD5

    14ff402962ad21b78ae0b4c43cd1f194

    SHA1

    f8a510eb26666e875a5bdd1cadad40602763ad72

    SHA256

    fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b

    SHA512

    daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b

  • memory/740-142-0x0000000000000000-mapping.dmp

  • memory/740-150-0x0000000006390000-0x00000000063AE000-memory.dmp

    Filesize

    120KB

  • memory/740-154-0x0000000007CD0000-0x000000000834A000-memory.dmp

    Filesize

    6.5MB

  • memory/740-153-0x0000000006930000-0x000000000694E000-memory.dmp

    Filesize

    120KB

  • memory/740-160-0x00000000079B0000-0x00000000079B8000-memory.dmp

    Filesize

    32KB

  • memory/740-152-0x00000000704D0000-0x000000007051C000-memory.dmp

    Filesize

    304KB

  • memory/740-151-0x0000000007350000-0x0000000007382000-memory.dmp

    Filesize

    200KB

  • memory/740-159-0x00000000079D0000-0x00000000079EA000-memory.dmp

    Filesize

    104KB

  • memory/740-155-0x0000000007690000-0x00000000076AA000-memory.dmp

    Filesize

    104KB

  • memory/740-158-0x00000000078C0000-0x00000000078CE000-memory.dmp

    Filesize

    56KB

  • memory/740-157-0x0000000007910000-0x00000000079A6000-memory.dmp

    Filesize

    600KB

  • memory/740-156-0x0000000007700000-0x000000000770A000-memory.dmp

    Filesize

    40KB

  • memory/740-145-0x0000000002A50000-0x0000000002A86000-memory.dmp

    Filesize

    216KB

  • memory/740-147-0x0000000005570000-0x0000000005B98000-memory.dmp

    Filesize

    6.2MB

  • memory/740-148-0x0000000005C10000-0x0000000005C32000-memory.dmp

    Filesize

    136KB

  • memory/740-149-0x0000000005CB0000-0x0000000005D16000-memory.dmp

    Filesize

    408KB

  • memory/4184-135-0x0000000005EB0000-0x0000000005EF4000-memory.dmp

    Filesize

    272KB

  • memory/4184-132-0x00000000737D0000-0x0000000073859000-memory.dmp

    Filesize

    548KB

  • memory/4184-133-0x0000000005FB0000-0x0000000006554000-memory.dmp

    Filesize

    5.6MB

  • memory/4184-130-0x0000000000560000-0x0000000000642000-memory.dmp

    Filesize

    904KB

  • memory/4184-134-0x0000000005AA0000-0x0000000005B32000-memory.dmp

    Filesize

    584KB

  • memory/4676-137-0x0000000000000000-mapping.dmp

  • memory/4676-146-0x0000000006BC0000-0x0000000006C5C000-memory.dmp

    Filesize

    624KB

  • memory/4676-144-0x0000000006920000-0x000000000692A000-memory.dmp

    Filesize

    40KB

  • memory/4676-143-0x0000000006970000-0x00000000069C0000-memory.dmp

    Filesize

    320KB

  • memory/4676-141-0x00000000063B0000-0x0000000006416000-memory.dmp

    Filesize

    408KB

  • memory/4676-138-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB